Trane LO manual UNT-IOM-6

securely set the open memory position. The memory stop indicates the last set open position.

7.If using a 3-way valve: close the control valve to the coil, with the differential pressure meter still

connected. This will divert flow to the bypass side of a 3-way valve. Adjust the balancing fitting to obtain the same pressure drop across the circuit setter valve as in step 2 when the control valve was open to the coil.

Figure 18. Close-up view of manual circuit setter valve.

Figure 19. Setting the manual circuit setter valve, differential pressure vs. flow.

30 UNT-IOM-6